Update README.md (form:// and forms:// examples) (#1045)

Author: dgtlmoon

README.md

@@ -179,7 +179,7 @@ Apprise have some email services built right into it (such as yahoo, fastmail, h
 
 | Post Method          | Service ID | Default Port | Example Syntax |
 | -------------------- | ---------- | ------------ | -------------- |
-| [Form](https://github.com/caronc/apprise/wiki/Notify_Custom_Form)       | form:// or form://   | (TCP) 80 or 443 | form://hostname<br />form://user@hostname<br />form://user:password@hostname:port<br />form://hostname/a/path/to/post/to
+| [Form](https://github.com/caronc/apprise/wiki/Notify_Custom_Form)       | form:// or forms://   | (TCP) 80 or 443 | form://hostname<br />form://user@hostname<br />form://user:password@hostname:port<br />form://hostname/a/path/to/post/to
 | [JSON](https://github.com/caronc/apprise/wiki/Notify_Custom_JSON)       | json:// or jsons://   | (TCP) 80 or 443 | json://hostname<br />json://user@hostname<br />json://user:password@hostname:port<br />json://hostname/a/path/to/post/to
 | [XML](https://github.com/caronc/apprise/wiki/Notify_Custom_XML)         | xml:// or xmls://   | (TCP) 80 or 443 | xml://hostname<br />xml://user@hostname<br />xml://user:password@hostname:port<br />xml://hostname/a/path/to/post/to